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chubhunter [2.5K]
3 years ago
10

A race car accelerates from 0 m/s to 30.0 m/s with a displacement of

Physics
1 answer:
worty [1.4K]3 years ago
6 0

Answer:

4. 10.0 m/s²

Explanation:

I) if initial velocity is 'v₀', the final velocity is 'v', the accelaration is 'a', the distance is 'L' and elapsed time if 't', then:

1. \ a=\frac{v-v_0}{t};

2. \ L=\frac{at^2}{2}.

II) using these two equations after substitution v₀=0; v=30 and L=45:

\left \{{{45 =\frac{at^2}{2}} \atop {a=\frac{30-0}{t} }} \right.

\left \{ {{at^2=90} \atop {at=30}} \right. \  \ \left \{ {{a=10} \atop {t=3}} \right. => \ a=10\frac{m}{s^2}

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<h3>What is free fall ?</h3>
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h = \frac{g t^2}{2}

where,

h = height = 5m ,

t = time ,

g =gravity = 9.8 m/s.

t^{2} = 2h / g = 10/9.8 = 1.02

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To learn more about : Free Fall

Ref : brainly.com/question/12167131

#SPJ9

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